CVE-2017-15110: Moodle Exposure of Sensitive Information to an Unauthorized Actor

moodle/moodle Updated 02 Oct 2025

Summary

17/05/2022
Yes i
Moderate
4.3

CVE-2017-15110: Moodle Exposure of Sensitive Information to an Unauthorized Actor. Affects moodle/moodle across 3 version ranges.

>= 3.1, < 3.1.9 >= 3.2, < 3.2.6 >= 3.3, < 3.3.3

Fixed in 3.1.9, 3.2.6 or 3.3.3, depending on the release line you run. How to fix ↓

Free scan

Check if this vulnerability affects your application

Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.

Check my app free

No signup required · Results in about 60 seconds

Upload your dependency manifest or SBOM

Drag & drop your file here or

Java Javascript PHP Python Go Rust Ruby Dart C/C++ Elixir CycloneDX SPDX

Upload a supported dependency manifest or SBOM. No installation or source-code access required.

See supported files and SBOM formats
SBOM sbom.json · bom.json · bom.xml · *.spdx.json · *.cdx.json · *.cdx.xml
Java pom.xml · gradle.lockfile · buildscript-gradle.lockfile
Javascript package-lock.json · yarn.lock · pnpm-lock.yaml
PHP composer.lock
Python poetry.lock · requirements.txt · Pipfile.lock
Go go.mod
Rust Cargo.lock
Ruby Gemfile.lock
Dart pubspec.lock
C/C++ conan.lock
Elixir mix.lock
Enter your work email to receive your report link.

Verify your email to view the full report and start 30 days of continuous monitoring. No credit card required.

Sponsored Devnack Penetration testing for web, API and mobile Manual testing by engineers who build software, not an auditor's checklist. Trusted by teams at Swift and Google Talk to Devnack

Background

Moodle is an open-source learning management system (LMS) used by educational institutions worldwide. It provides a platform for creating and managing online courses, allowing students and teachers to interact and collaborate. Moodle offers various features such as course management, content creation, assessment tools, and communication channels. However, a vulnerability in Moodle 3.x allows unauthorized access to sensitive information.

Vulnerability Detail

The vulnerability in Moodle 3.x allows students to discover the email addresses of other students in the same course. By using the search function on the Participants page, students can search for email addresses of all participants, regardless of email visibility settings. This enables the enumeration and guessing of email addresses of other students, potentially leading to privacy breaches and unauthorized access to personal information.

How To Fix

Fixed versions by release line

The minimum fixed version depends on the release line you run.

  • >= 3.1, < 3.1.9 3.1.9
    composer require moodle/moodle:3.1.9
  • >= 3.2, < 3.2.6 3.2.6
    composer require moodle/moodle:3.2.6
  • >= 3.3, < 3.3.3 3.3.3
    composer require moodle/moodle:3.3.3

Tip — Not sure which release line you're on? Vulert can find the fix for the version you are using. Scan free →

Workaround

There is no specific workaround provided for this vulnerability. Users are advised to apply the available patches or upgrade to the recommended versions to mitigate the risk.

Conclusion

The vulnerability in Moodle 3.x exposes sensitive information, specifically email addresses of students, to unauthorized actors. To mitigate this risk, users should upgrade their Moodle installations to the recommended versions or apply the available patches. For further support on vulnerability remediation, please contact DevNack.com.

See every vulnerability recorded for moodle/moodle →

Share this vulnerability

FAQ

Moodle is an open-source learning management system used for online course management and collaboration.

The vulnerability allows unauthorized access to email addresses of students, potentially leading to privacy breaches and unauthorized access to personal information.

Moodle versions 3.1, 3.2, and 3.3 are affected by this vulnerability.

To fix this vulnerability, upgrade your Moodle installation to version 3.1.9, 3.2.6, or 3.3.3 or later.

There is no specific workaround provided. It is recommended to apply the available patches or upgrade to the recommended versions.

Related vulnerabilities

Recent vulnerabilities recorded for moodle/moodle.

How To Fix

Fixed versions by release line

The minimum fixed version depends on the release line you run.

  • >= 3.1, < 3.1.9 3.1.9
    composer require moodle/moodle:3.1.9
  • >= 3.2, < 3.2.6 3.2.6
    composer require moodle/moodle:3.2.6
  • >= 3.3, < 3.3.3 3.3.3
    composer require moodle/moodle:3.3.3

Tip — Not sure which release line you're on? Vulert can find the fix for the version you are using. Scan free →

Subscribe to Vulert on Telegram
Daily digest of new CVEs, critical and high severity, affected packages and fixes — plus a weekly roundup.
Join the channel →
Help improve this record
Report an issue or send feedback